Improvement in electro-galvanic chairs



2 Sheets-Sheet 2.

S. C. PRATT. Electro-Galvani() Chairs', 4. 5 No. 199,663. i Patented Jan. 29,1878.

mnedes me); for:

.ff-4M M A NPETERS, FHOTO-LITHOGRAPHER. WASHXNGTON. D C, I

UNITED STATES APATENT OFFICE.

S. cLESSoN PRATT, oFcHIcAGo, ILLINOIS.

\. IMPROVEMENT IN ELECTRO-GALVANIC CHAIRS.

l i Specification forming part of Letters Patent No. 199,663, dated `Ianuary 29, 1378g application filed August 27, 1877.u

To all cvhom'fit may concern y Be it known that I, S. OLnssoNPRATT, of Chicago, Cook county,`State of Illinois, have invented new and useful Improvements in Elec- Y larged plan of the switch-table and switches. Fig. 5 is a transverse vertical section of the galvanic battery.

My invention consists in combining a galvanic and an electro-magnetic battery with a chair or other seat for the patient, so that either current separately or both currents together can be sent to the patient; in providing such y seat and batteries with wires and switches, so

arranged that a single set of switches con-- trols both currents; in providing a 'Switch-table atthe side of such seat, so arranged that the operator can readily manipulate the switches, either when sitting or standing; in providing the seat with a head-rest connected with the batteries and with a connection for electrodes for local treatment.V v v ln the drawings, A represents a chair, which, for convenience, should have a removable seat. The lower portion of the chair is" incased on all sides, so as to exclude dust and conceal the contents, and is provided with a platform, on which the batteries are located. Gr is a galyanic battery, and E is an electro-magnetic batery. a is a case, which serves as a guide for abox, b, in which the cups c'for thesolution are placed.

Bis a shaft, located in bearings infthewalls ottheehair. The box b, which holds the cups c, is connected with the shaft B by means of cords or straps, so that by rotating the shaft the box b and cup c can be raised up, bringing the cups up so that the plates will be in the solution, the plates`being stationary. This re lates to the battery G.

C is another shaft, by means of which the cup containing the solution for the other battery, E, can be in like manner raised.

d is a ratchet-wheel, one on each shaft B G, and e is a ratchet, one for each wheel d, for the purpose of holding the solution-cups in any desired position. The strength 'of the currents can be governed byraising or'lowering the solution-cups.

D is a case, within which is located a helix for the battery E. F is a rheotome, through which the current from the galvanic battery passes, or mayl pass, if desired., H is a foot-board. As shown,it is held in place by means of hooks f; but it might be permanently connected to the chair.

I I are metal plates upon the foot-boardH.l g g are metal connections between the plates I `I and the posts h h', which are adapted to receive an d hold wires connected with electrodes.

J J' are metal balls secured to the front ends of the arms of the chair, upon which the hands of the patient may be placed. K is a head-rest attach ed to a metal-plate, L, which can slide up and down in the back of the chair, and is held in place by means of a set-screw. i is a metal rod or bar attached to the back of the chair, so as to be in contact with the slide L. The lower end of this rod fis to be so located that wires can be connected therewith. 7' is a bindingLpost, located on the back of the chair, and having a metal connection with ythe slide L. M is a hollow standard, the lower portion of which is suitably secured to the side ofthe chair. It is curved up and carried a little way from the chair, Yso as to be out of the way of the patient. Upon the upper end of this standard is a hollow case', Q,.theupper s urface of which forms a switch-board.

k k1 k2 k3 7a4 are switch-posts, which are,.re spectively, connected with the' head-rest, with the balls for the hands and the plates for the feet, as hereinafter more fully specified. Al Z1 Zz l? l* are switches, which are, respectively, pivoted to such posts k kl k2 k3 7a4. p 'n are switchposts-positive and negative. y f It will be observed that there is a positive post, p, anda negative post, n, oneach sideo'f ea'ch of the switches. All of these posts p a which are on the ri ght-h and side of each switch (looking at the key-board from the front) are to be used to control and direct the electromagnetic current, and all such posts p u on the other side of the several switches are to be used to direct the galvanic current.

` All of the posts p which are on the right battery and with hand of the several switches are to be connected with 'the positive pole of the electromagnetic battery and with each other by a slngle wire, and all of the posts n on the same side of such switches are to be connected with the negative pole of the electro-magnetic battery and with each other by meansof another wire. All of the posts p which are on the left hand nected with the positive pole of the galvanic each other by means of a single wire, and all of the posts n on the left of the switches are to be connected with the negative pole of the galvanic battery and with each other byanotherwire. These connections are indicated by dotted lines in Fig. 4. 4 The wires are to run from the batteries throughv the arm M into Q. The posts p n are to be so located that their respective switches can be made to touch them.

rIhe head-rest is to be switch or key Z by means of a wire running from the rod 'i to the post 7c. The ball J for the right hand is to be connected with the post la.

connected with the The ball J for the left hand is to be connected with the post k2. The plate I for the right foot is to be connected with the post k3. The plate Il for the left foot is to be connected with the post 704. All of these connections are to be made by means of suitable wires, which can pass up through the standardM into the case Q.

I have not indicated all of the connectingwires in the drawings, as their number might produce confusion, but any one familiar with the art can arrange them from the description.

rThe foot-plates can be connected with their proper switcheslby means of wires running from the binding-posts h h', which posts are connected with the foot-plates by means of thebarsgg.

In use,a current from the galvanic battery can be run to the head of and through the patient7 as follows: Place the head of the patient in. the rest K, which should be provided with a moist sponge,- the switch l being in contact with the post p on the left of l. Then, if the right hand be upon the knob or ball J and the key Z be in vcontact with the post n upon the left ot' l', the circuit from the galvanicbattery will be complete, the current passing from the positive pole to the head, thence through the body, passing out at the hand. The circuit can be completed by the use of eitherhand or either foot. So a current can be run from either battery to either hand or to either foot and through the patient, who completes the circuit by properly arranging the switches,

which the operator can manipulate while either example,v one current from of the several switches are to be con? tery ceases to operate. 'sired from batteryG alone, the cups in E are lowered in like manner till that battery ceases ,or out of operation,

sitting" or standing by the patient, afsingle set of switches controlling the currents from both batteries.

Both currents can be sent through diiierent parts of the patient at the same time. For y the right hand to theV right foot and the other current from the left hand to the left foot.

By the use of electrodes'local treatment can be applied. For example, by the use of suitable electrodes, applied at j, (when a current iis running to the head,) the eye, ear, spine, or

other parts of the upper portion of the body can be treated. Local treatment can be applied to the lower limbs by means of electrodes connected'at h h.

The direction of the currents can be changed by manipulating the switches. The switches are marked as follows Head It. H. for right hand 5 L. H. for left hand; R. F.for right foot; L. F. for left foot. v

By arranging the switch-box Q at the side of the chair and upon the hollow standard M,

all the wires running from the batteries and v ,chair to the switches are concealedv and protected. The switches, also, are so located that the operator can manipulate them either sitting or standing, and at the same. time ob serve the patient, and, when desired, the patient, having been iirst suflicientlyinstructed, can manipulate the switches for himself.

When itis desired to use a current from the lbattery E alone, the solution-cups of the battery G are lowered by the shaft B, so as to be out of contact with the plates when that bat- When a current is deto act'. Ihus either or both may bethrown into strong or light action, as may be desired.

. What I claim as new, and desire to secure by Letters Patent, is as follows:

l. A seat, A, in combination with a gal- I vanic battery and an electrofmagnetic battery and connecting-wires, substantially as and for the, purposes described.

2. The combination of the batteries G and E with a seat, A, connecting-wires, andl switches,

so arranged that the current from either battery, or from both batteries, may be used and controlledby means of a single set of switches,

substantially as specified.

3. The seat A, in combination with the support M and switch-box Q, located and operating substantially as set forth. Y

` S. @LESSON PRATT.

Witnesses:

E. A. Wns'r,

0. W. BOND.

or adjusted to. have a l, 

